Reflect.parse("42", { builder: {
  program: function program() {
    return 24;
  }
}});
/*
Exception: (function functionDeclaration() { return 24 }) is not a function
@Scratchpad/2:1
WCA_evalWithDebugger@resource://gre/modules/devtools/dbg-server.jsm -> resource://gre/modules/devtools/server/main.js -> resource://gre/modules/devtools/server/actors/webconsole.js:958
WCA_onEvaluateJS@resource://gre/modules/devtools/dbg-server.jsm -> resource://gre/modules/devtools/server/main.js -> resource://gre/modules/devtools/server/actors/webconsole.js:651
DSC_onPacket@resource://gre/modules/devtools/dbg-server.jsm -> resource://gre/modules/devtools/server/main.js:1019
@resource://gre/modules/devtools/dbg-server.jsm -> resource://gre/modules/devtools/server/main.js -> resource://gre/modules/devtools/server/transport.js:258
@resource://gre/modules/devtools/dbg-server.jsm -> resource://gre/modules/devtools/server/main.js -> resource://gre/modules/devtools/DevToolsUtils.js:75
*/